WO2021031448A1

WO2021031448A1 - Electrosurgical pencil

Info

Publication number: WO2021031448A1
Application number: PCT/CN2019/122607
Authority: WO
Inventors: 苏英; 周雷; 尹作凯; 刘雨
Original assignee: 浙江舒友仪器设备有限公司
Priority date: 2019-08-22
Filing date: 2019-12-03
Publication date: 2021-02-25
Also published as: CN110420055A

Abstract

An electrosurgical pencil, comprising a handle (2), a power supply line (1) and a power supply plug (7). The two ends of the power supply line (1) are respectively connected to one end of the handle (2) and to the power supply plug (7), an electrode (5) being provided at the other end of the handle (2). A circuit board (6) is provided inside the handle (2), and the electrode (5) is electrically connected to the circuit board (6). The power supply line (1) is a ribbon cable, one end of the ribbon cable extending into the interior of the handle (2) and being soldered to the circuit board (6), and the other end of the ribbon cable being electrically connected to the power supply plug (7). Such arrangement is able to increase the simplicity, soundness, and reliability of the solder between the power supply line (1) and the circuit board (6), reducing the frequency of faulty conduction in the electrosurgical pencil, and improving production efficiency for the wire solder.

Description

Surgical electric knife pen

Technical field

The present invention relates to the field of medical equipment, and more specifically, to an electrosurgical pen.

Background technique

The medical electrosurgical pen is a relatively common medical device used in surgery. The main function of the electrosurgical pen is to cut tissues and electrocoagulate hemostasis. It usually includes a surgical handle, a surgical electrode, and a surgical handle connected to the surgical electrode. The circuit board system and the two finger switches of the control circuit board system arranged on the outer surface of the pen body, one of the buttons controls the function tube of the electrosurgical pen to perform cutting operations, and the other button is used to control the functional tube of the electrosurgical pen to perform coagulation operations. The existing electrosurgical pen power cord mainly uses a three-core sheathed wire, and the technical defects are as follows: 1. The position of each wire is not fixed before, and it is not easy to realize large-scale automatic wire bonding, and the consistency of manual welding is not easy to control and easy to appear. Welding and welding are not firm; 2. Each core wire and core wire are superimposed on each other, and when welding with the circuit board, welding angles are likely to occur, forming stress points, causing breakage, and non-conduction or poor conduction in clinical ; 3. The core wire and the core wire position are not fixed, the welding worker is required to distinguish the welding position, which increases the risk of wire welding wrong position.

Summary of the invention

technical problem

The solution to the problem

Technical solutions

The purpose of the present invention is to make up for the defects in the prior art, provide a surgical electrosurgical pen, improve the convenience, firmness and reliability of the welding of the power cord and the circuit board, reduce the poor conduction rate of the electrosurgical pen, and improve the welding wire Production efficiency.

The technical scheme of the present invention is as follows: a surgical electrosurgical pen, comprising a handle, a power cord and a power plug. The two ends of the power cord are respectively connected to one end of the handle and the power plug, and the other end of the handle is provided with electrodes, so The handle is provided with a circuit board, and the electrode is electrically connected to the circuit board, and is characterized in that: the power cord is a flat wire, and one end of the flat wire extends into the handle and is connected to the circuit board. By welding, the other end of the flat cable is electrically connected with the power plug.

Further, the circuit board is provided with an electric cutting circuit and an electrocoagulation circuit, the electric cutting circuit is provided with an electric cutting contact, the electrocoagulation circuit is provided with an electrocoagulation contact; the outer surface of the handle is provided with a switch The switch is used to control the conduction of the circuit board, and the switch includes an electric cutting button and an electrocoagulation button; after the electric cutting button is pressed, it is connected with the electric cutting contact to control the The electrocoagulation circuit is turned on; after the electrocoagulation button is pressed, it is connected with the electrocoagulation contact point to control the conduction of the electrocoagulation circuit.

Further, the electrode is electrically connected to the circuit board through a wire.

Further, one end of the flat cable extends from the rear end of the handle into the handle and is welded to the circuit board.

Further, one end of the circuit board connected to the flat cable is provided with soldering points, and notches are provided between the soldering points.

Further, a baffle adapted to the notch is provided on the handle.

Further, the middle section of the handle adopts a circular arc streamline transition.

Further, the circuit board is a PCB board.

Further, the power plug is a three-wire plug, and the flat cable is a three-core flat cable.

Furthermore, each core wire of the power cord is wrapped with an insulating layer.

The beneficial effects of the invention

Beneficial effect

The beneficial effects of the present invention are:

1. The use of flat-wire power cords can realize large-scale automatic welding and improve production efficiency;

2. When the core wire of the flat cable is welded to the circuit board, it is welded to the circuit board without stress angle, which reduces the risk of poor conduction;

3. The position of the core wire of the cable is fixed, which reduces the risk of welding errors;

4. The electric board adopts the groove design at the welding position to prevent the welding spot from being too large and short circuit;

5. The handle is provided with a baffle adapted to the socket to separate the solder joints to prevent voltage breakdown and short circuit, which improves the safety of the product. On the premise that the product meets the requirements, the volume and shape are more compact and refined, the grip is more comfortable, and it is not easy to fatigue.

6. The middle section of the pen body adopts circular arc streamline transition, which conforms to ergonomic design.

7. Since each core wire is wrapped with a layer of insulation, there are actually two layers of insulation between each core wire in the three-core cable. Compared with the round wire with three cores close together, Its withstand voltage and insulation are higher.

Brief description of the drawings

Description of the drawings

In order to illustrate the technical solution of the present invention more clearly, the following briefly introduces the drawings needed in the description of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. Ordinary technicians can obtain other drawings based on these drawings without creative work.

Figure 1 is a schematic diagram of the structure of the electrosurgical pen of the present invention;

Figure 2 is a structural schematic diagram of the open handle of the electrosurgical pen of the present invention;

3 is a schematic diagram of the structure of the circuit board of the electrosurgical pen of the present invention;

FIG. 4 is a schematic diagram of the structure of the welding place of the circuit board of the electrosurgical pen of the present invention;

Fig. 5 is a schematic structural diagram of the flat cable of the electrosurgical pen of the present invention.

Among them, 1-power cord; 2-handle; 3-electrocoagulation button; 4-electric cutting button; 5-electrode; 6-circuit board; 7-power plug; 8-slot; 9-baffle.

Invention embodiment

Embodiments of the invention

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

FIGS. 1 and 2 are schematic diagrams of the structure of the surgical electrosurgical pen of the present invention. As shown in FIGS. 1 and 2, it includes a handle 2 which can be held by a doctor for surgical operations and is used to support the electrode 5 and accommodate the circuit board 6. The electrode 5 is arranged at the front end of the handle 2 and is used to directly contact the wound for electrocutting or electrocoagulation.

The handle 2 is provided with a circuit board 6. Preferably, the circuit board is a PCB board, the outer surface of the handle is provided with a switch, and the circuit board is provided with an electric cutting circuit and an electrocoagulation circuit. The electric cutting circuit The electrocoagulation circuit is provided with an electrocoagulation contact, the electrode 5 is electrically connected to the circuit board 6 through a wire, and the switch includes an electrocoagulation button 4 and an electrocoagulation button 3. The cutting button 4 is connected with the electric cutting contact to control the conduction of the electric cutting circuit, and the electrode realizes the electric cutting operation. When the electric cutting button 4 is released, the electric cutting button 4 is separated from the electric cutting contact, and the electric cutting The electric cutting operation can be ended when the circuit is disconnected. Press the electrocoagulation button 3, which is connected with the electrocoagulation contact to control the conduction of the electrocoagulation circuit, so that the electrode can perform electrocoagulation operation, release the electrocoagulation button 3, the electrocoagulation button 3 and the electrocoagulation The contact is separated and the coagulation circuit is disconnected to end the coagulation operation.

It should be understood that the circuit setting and control switch setting in the handle 2 may also be in other forms, and the embodiment of the present invention is not limited thereto.

Among them, the surgical electrosurgical pen also includes a power cord 1 and a power plug 7. The electrosurgical pen is electrically connected to the electrosurgical host through the power plug 7, and the electrocoagulation signal and the electrosurgical signal provided by the electrosurgical host pass the power plug 7 and the power cord 1. Transfer to the circuit board 6. The power cord 1 is a flat cable, and the power plug 7 is a three-wire plug, which is respectively used to communicate with the live, neutral and ground wires. The corresponding flat cable is a three-core flat cable. One end of each core wire is connected to the corresponding The one-core plug is electrically connected, the cable extends from the rear end of the handle into the inside of the handle, and the other end of the wire of each core is welded to the circuit board, and the electrical signal of the electric knife host can pass through the three-wire plug And the three-core cable is transmitted to the circuit board 6.

It should be understood that the flat cable can also extend into the handle from other parts of the handle, such as the middle of the handle, so that the flat cable can be connected to the circuit board. In addition, the form of the plug and the number of cores of the cable can also be other forms, such as a 2-core plug and a 2-core flat cable or a multi-core plug and a multi-core flat cable.

Figures 3 and 4 are schematic diagrams of the circuit board structure and schematic diagrams of the circuit board welding of the electrosurgical pen of the present invention. As shown in Figures 3 and 4, the circuit board 6 is a PCB circuit board, in order to prevent excessive solder joints during welding A large short circuit is caused, and a notch 8 for separation is opened between the welding points. The notch 8 allows a certain distance between the welding points, which has a good effect on preventing short circuits. A baffle 9 is provided on the handle, and the baffle 9 is adapted to the notch 8. The baffle 9 is clamped into the notch 8 to separate the soldering points, so that the cable is being welded , Need to be placed correspondingly, the line welding error rate will be greatly reduced, the setting of the baffle 9 can prevent the voltage breakdown circuit.

Figure 5 is a schematic structural diagram of the flat cable of the electrosurgical pen of the present invention. As shown in Figure 5, the above flat cable uses a three-core flat cable. The traditional power cord mainly uses a three-core sheathed cable, which is different from the traditional three-core sheathed cable. In contrast, due to the flat structure of the three-core cable, when the cable is twisted and twisted during use, a restoring force generated by the cable itself will adjust the angle automatically, preventing the electric knife wire from being overwound and twisted during use. The user brings inconvenience.

The use of a three-core cable also reduces the stress generated by the circuit on the solder joints during use, making the solder joints easy to damage, causing the cable to fall off, causing damage to the electrosurgical pen, and improving the safety and quality of the electrosurgical pen. .

Since the three-core cable is arranged in a side-by-side structure, when the welding point position is corresponding during welding, as long as one of the two sides of the three-core cable corresponds correctly, each welding head of the three-core cable corresponds accurately, saving use The three-core sheath wire needs one-to-one correspondence time when welding, and improves the welding accuracy.

When the three-core cable is used, it is arranged side by side, so an extra layer of insulation is provided between adjacent cables. The insulation of the cable has double protection, so that the electric knife pen has better insulation.

The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily think of various equivalents within the technical scope disclosed in the present invention. Modifications or replacements, these modifications or replacements should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

A surgical electric knife pen, comprising a handle (2), a power cord (1), and a power plug (7). Two ends of the power cord (1) are respectively connected to one end of the handle (2) and the power plug (7) , The other end of the handle (2) is provided with an electrode (5), the handle (2) is provided with a circuit board (6), the electrode (5) is electrically connected to the circuit board (6), and The feature is that the power cord (1) is a flat cable, one end of the flat cable extends into the handle (2) and is welded to the circuit board (6), and the other end of the flat cable is connected to the The power plug (7) is electrically connected.
The electrosurgical pen according to claim 1, wherein the circuit board (6) is provided with an electric cutting circuit and an electric coagulation circuit, the electric cutting circuit is provided with electric cutting contacts, and the electric coagulation circuit There is an electrocoagulation contact; the outer surface of the handle (2) is provided with a switch, the switch is used to control the conduction of the circuit board (6), and the switch includes an electric cut button (4) and an electrocoagulation Button (3); After the electric cutting button (4) is pressed, it is connected with the electric cutting contact to control the electric cutting circuit to conduct; after the electric coagulation button (3) is pressed, it It is connected with the electrocoagulation contact to control the conduction of the electrocoagulation circuit.
The surgical electrosurgical pen according to claim 1, wherein the electrode (5) is electrically connected to the circuit board (6) through a wire.
The electrosurgical pen according to claim 1, wherein the circuit board (6) is provided with a welding point at one end connected to the flat cable, and a notch (8) is provided between each welding point.
The surgical electrosurgical pen according to claim 4, characterized in that a baffle (9) adapted to the notch (8) is provided on the handle (2).
The electrosurgical pen according to claim 1, wherein the middle section of the handle (2) is formed by a circular arc streamline transition.
The surgical electrosurgical pen according to claim 1, wherein the circuit board (6) is a PCB board.
The surgical electric knife pen according to claim 1, wherein the power plug (7) is a three-wire plug, and the flat cable is a three-core flat cable.
The electrosurgical pen according to claim 1, characterized in that the outer core of the power cord (1) is wrapped with an insulating layer.